diff --git a/mozilla/security/psm/server/serv.h b/mozilla/security/psm/server/serv.h
index 6448ddd1d3e..aec5b96499a 100644
--- a/mozilla/security/psm/server/serv.h
+++ b/mozilla/security/psm/server/serv.h
@@ -86,7 +86,7 @@ extern PRBool standalone;
 /* Safe strcmp() which compares only based on the shorter 
    of the two lengths. DO NOT USE if you really want to determine
    string equality -- this is used for sloppy parameter matches. */
-#define MIN_STRCMP(x,y) strncmp((x), (y), MIN(strlen(x),strlen(y)))
+#define MIN_STRCMP(x,y) strncmp((x), (y), PR_MIN(strlen(x),strlen(y)))
 
 /* forward declare this type to eliminate circular dependencies */
 typedef struct SSMResource SSMResource;